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PostPosted: Thu Jun 06, 2013 3:24 pm 
Gold Trader
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Did the Shimano UN-91 XTR M900 bottom brackets only come in 2 axle lengths 107 and 113mm? or did they make others lengths

was looking though my bottom brackets and have a 115mm UN-91 in 68mm shell with DH stamped on the axle... would this be for full suspension frames?.. down hill bikes in the early 90s


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PostPosted: Thu Jun 06, 2013 4:42 pm 
retrobike rider
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The way the brain think

UN90 came in 107 and 113 coded with MM107 and LL113. there was also the 115 for road users coded in the traditional coding of DH describing the axle length and offsets either side.
later when it was rebranded as UN91 other lentghs were added
these also use traditional stamping apart from 110 using MM110. the rest of the ranged are the same


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PostPosted: Thu Jun 06, 2013 6:38 pm 
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a so its a road bike one never seen these before 8)


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PostPosted: Thu Jun 06, 2013 8:55 pm 
retrobike rider
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Made exactly the same though. Should work quite nicely on Suntour MD cranks as well.


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